Life Cycle of Entamoeba Histolytica
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Questions and Answers

What is the primary method of transmission of Plasmodium sp.?

  • Through contaminated food and water
  • Through the feces of an infected cat
  • By the bite of an infected female Anopheles mosquito (correct)
  • Through direct contact with an infected person

    • What is the disease caused by Toxoplasma gondii?

  • Malaria
  • Trypanosomiasis
  • Toxoplasmosis (correct)
  • Amoebiasis

    • What is the characteristic of the ulcer caused by Entamoeba histolytica?

  • Irregular shape
  • Round shape
  • Oval shape
  • Flask shape (correct)

    • What is a common complication of Entamoeba histolytica infection?

    <p>All of the above</p> Signup and view all the answers

    What is the primary mode of transmission of Toxoplasma gondii?

    <p>All of the above</p> Signup and view all the answers

    What is the reproductive stage of Plasmodium sp.?

    <p>Sexual reproduction in anopheles mosquito</p> Signup and view all the answers

    What is the characteristic of the liver abscess caused by Entamoeba histolytica?

    <p>Severe pathology in the liver</p> Signup and view all the answers

    Which of the following protozoan parasites moves by the action of flagella?

    <p>Giardia</p> Signup and view all the answers

    What is the primary reservoir of Entamoeba histolytica?

    <p>Humans</p> Signup and view all the answers

    What is the mode of locomotion of Entamoeba histolytica?

    <p>Pseudopodia</p> Signup and view all the answers

    Which of the following is NOT a characteristic of Sporozoa?

    <p>Motile</p> Signup and view all the answers

    Which vector is responsible for transmitting malaria?

    <p>Mosquitoes</p> Signup and view all the answers

    What is the mode of transmission of Trypanosomiasis?

    <p>Through the bite of an infected tsetse fly or kissing bug</p> Signup and view all the answers

    What is the disease caused by Entamoeba histolytica?

    <p>Amoebiasis</p> Signup and view all the answers

    What is the characteristic feature of helminths?

    <p>They are multicellular eukaryotic animals with various systems</p> Signup and view all the answers

    Which of the following is a characteristic of protozoan parasites?

    <p>Motile</p> Signup and view all the answers

    What is the common symptom of Trypanosomiasis in immunocompromised individuals?

    <p>Severe infection</p> Signup and view all the answers

    What is the intermediate host of Echinococcus?

    <p>Human</p> Signup and view all the answers

    What is the habitat of Taenia saginata?

    <p>Small intestine</p> Signup and view all the answers

    What is the morphology of the adult Taenia saginata?

    <p>Divided into three parts</p> Signup and view all the answers

    How do cows get infected with Taenia saginata?

    <p>Through ingestion of infected human feces</p> Signup and view all the answers

    Which of the following characteristics is NOT true about protozoa?

    <p>They are multicellular organisms</p> Signup and view all the answers

    What is the term for a permanent association between two organisms?

    <p>Symbiosis</p> Signup and view all the answers

    Which type of host is essential to parasite survival and a focus for spread to other hosts?

    <p>Reservoir host</p> Signup and view all the answers

    Which of the following is a characteristic of the life cycle of protozoa?

    <p>A trophozoite and cyst stage</p> Signup and view all the answers

    Which of the following helminths is classified as a Cestode?

    <p>Cestode</p> Signup and view all the answers

    What is the primary method of transmission for malaria?

    <p>Vector-borne transmission</p> Signup and view all the answers

    Which of the following is a symptom of trypanosomiasis?

    <p>All of the above</p> Signup and view all the answers

    Which of the following protozoa is associated with toxoplasmosis?

    <p>Toxoplasma</p> Signup and view all the answers

    Which type of host is responsible for the sexual cycle of a parasite?

    <p>Definitive host</p> Signup and view all the answers

    Study Notes

    Entamoeba Histolytica

    • Causes amoebiasis
    • Mode of locomotion: pseudopodia
    • Geographical distribution: cosmopolitan, more common in tropical and subtropical countries with poor sanitation
    • Habitat: lumen of large intestine, can invade wall of intestine
    • Reservoir: humans, dogs, pigs, monkeys
    • Morphology: two forms - cyst and trophozoite
    • Infective stage: cyst in polluted water and infected food
    • Pathogenic stage: trophozoite in large intestine, causes ulcer and liver damage
    • Clinical symptoms: asymptomatic in normal hosts, severe in immunocompromised individuals, congenital infections can cause blindness in newborns

    Toxoplasma Gondii

    • Causes toxoplasmosis
    • Transmission: eating undercooked meat, contaminated food and water, congenital transmission, person-to-person
    • Geographical distribution: worldwide
    • Clinical symptoms: fever, severe abdominal pain, liver damage
    • Complications: liver abscess, lung, skin, and brain damage

    Plasmodium Sp. (Malaria)

    • Transmission: female Anopheles mosquito
    • Life cycle: sexual reproduction in mosquito, asexual reproduction in human
    • Clinical symptoms: dysentery, blood and mucous diarrhea, severe abdominal pain
    • Complications: peritonitis, appendicitis, hemorrhage, liver damage

    Protozoa

    • Unicellular, eukaryotic organisms
    • Inhabit water and soil
    • Life cycle: trophozoite and cyst
    • Reproduction: asexual by fission, budding, or schizogony
    • Some are part of normal microbiota, others cause human disease

    Classification of Parasites

    • Protozoa: single-celled eukaryotes, blood and tissue, intestinal, urogenital tract
    • Helminthes: multicellular eukaryotes, platyhelminthes (flatworms), nematoda (roundworms), cestodes (tapeworms)

    Helminthes

    • Multicellular eukaryotic animals
    • Possess digestive, circulatory, nervous, excretory, and reproductive systems
    • Types: platyhelminthes (flatworms), nematoda (roundworms), cestodes (tapeworms)
    • Examples: Taenia saginata (beef tapeworm), Taenia solium (pork tapeworm), Diphyllobothrium (broad fish tapeworm), Echinococcus (dog tapeworm)

    Taenia Saginata (Beef Tapeworm)

    • Habitat: small intestine, ileum
    • Transmission: ingestion of raw or poorly cooked meat of infected cows
    • Morphology: adult divided into three parts - head, neck, segments
    • Clinical symptoms: asymptomatic, rare cases of intestinal obstruction

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    Description

    This quiz covers the life cycle of Entamoeba Histolytica, a parasitic protozoan that causes amoebiasis, and its clinical picture.

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